Home / 10,420.21-15,632.09-3,846.43

Finding the Fourth Proportional to 10,420.21, 15,632.09 and 3,846.43

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Solution

The fourth proportional to 10,420.21, 15,632.09 and 3,846.43 is: 5,770.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,420.21 : 15,632.09 = 3,846.43 : x
  2. Step 2: Convert to fraction form
    10,420.21/15,632.09 = 3,846.43/x
  3. Step 3: Cross multiply
    10,420.21x = 15,632.09 × 3,846.43
  4. Step 4: Simplify right side
    10,420.21x = 60,127,642.55
  5. Step 5: Solve for x
    x = 60,127,642.55/10,420.21
  6. Step 6: Final answer
    x = 5,770.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.